Milling machine attachment



Aug. 15, 1950 c. VAN AUSDALL ,5

MILLING MACHINE ATTACHMENT Filed May 16, 1947 2 Sheets-sheaf 1 IN V ENTOR.

Calf] KJUZA H5012 g! 1950 c. VAN AUSDALL 2,519,205

' MILLING MACHINE ATTACHMENT 6 2 Sheet heet 2 1&0 26 3 IN V E OR.

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Patented Aug. 15, 1950 UNITED STATES PATENT OFFICE MILLING MACHINEATTACHMENT Carl Van Ausdall, Liberty, Ind. 7 Application May 16, 1947,Serial No; 748,536

(01. so -1v) 4 Claims.

7' This invention relates to a milling machine increasing the usefulnessand efliciency of a vertical milling machine by enlarging its scope ofoperations, such as sawing, slab milling, straddle 'milling, and otheroperations of a horizontal nature not ordinarily obtainable on avertical Another object is the saving of floor space in a machine shopor the like by providing means for making one machine do the work of twoor more.

Afurther object of the invention is the provision of an improvedconstruction sufficiently rigid and sturdy to permit of heavy andaccurate horizontal milling operations upon a vertical milling machine.

Another object is to provide a device having the foregoingcharacteristics, and which is durable in construction, simple ofoperation, and low in cost of manufacture.

These and other objects and advantages are attained by the meansdescribed in the following specifications and illustrated upon theaccom- I engaged in machine shop work have heretofore found it necessaryto install a horizontal or a costly universal milling machine whencalled upon to meet certain requirements of milling machine work, acontingency naturally reguiring additional floor space. a

The device of the present invention precludes the necessity Ofinstallingsuch additional machinery, since it is adapted to convert, simply andquickly, a vertical milling machine into a horizontal milling machine.This device, after it has performed its functions as a horizontalmiller,

may be quickly detached, and the machine may again be used as a verticalmiller.

Since one machine is thereby adapted to do the work of two or more, thesaving in cost and floor space to a machine shop operator is obvious.

Referring to Fig. 1, the column of a vertical milling machine isindicated at I, while the spindle head is shown at 8 and a head controlwheel at 9. Below the head is an adjustable work table Hl, one of thetable control wheelsbeing indicated at [2.

v The vertical spindle nose IS, in non-rotative but slidable engagementwith a vertical bore in the head 8, may be lowered from and elevatedinto said head by means of the hand wheel 9. A rotating spindle [5,which is provided with a tapered socket 6 at its lower end, is disposedwithin the spindle nose [3. In regular practice, the tapered socket ofthe spindle carries a taper shanked cutter which acts upon work clampedto the table It. As is obvious, the machine when so used is limited inthe amount or kind of milling work that can be done upon it.

The application of the device of the present invention to the verticalmilling machine, as shown in Fig. 1, obviously increases the elasticityof operations of said machine, including sawing, slab milling, straddlemilling, and the like. 7

A main block l6 (Fig. 4) provided with a split bore [1, substantiallycentrally thereof, is securely clamped against movement to the spindlenose l3, which has been lowered from the head 8 sumciently to permitsaid clamping thereupon. The bore split is indicated at 18, in Fig. 4.Clampin may be effected by means of the clamping screws I9, insertedthrough apertures in the ear 20 of the main block and threaded intotapped holes in th opposite ear 2| of said block.

Laterally extending from each side of the main block 16 are the arms22--23, each of said arms being horizontally apertured, as at 24, insubstantial parallelism, for the reception therethrough of the supportbars 25-26. These support bars are firmly clamped against movement bymeans of the screws 21 in a manner similar to that employed in clampingthe main block to the spindle nose, the apertures24 being split as at28, Fig.1.

A sprocket 29, having a tapered shank to fit the tapered socket 6 in thespindle I5, is inserted into'said socket. This sprocket 29 drives asecond sprocket 30 by means of the chain 3|. The driven sprocket 3B iskeyed to a vertical gear I shaft 32 which is stepped in suitablebearings 33 (Fig. 2) mounted in a gear housing 35. The gear housing maybe integral with the gear housing bracket 34, supported from the bars25-26.

Keyed to the gear shaft 32 is a worm 36 in mesh with the worm gear 87,said worm gear bein mounted upon a horizontal spindle 38 rotatablyjournaled in the gear housing 35. As will be noted, the spindle 38 maybe provided with a tapered bore 54 (Fig. 3) for frictional enga ementtherein of a tapered milling machine arbor of standard design, The;,wormgear 3-1 may be fixedto the horizontal spindle '38in any suitablemanner, as by means of pins 39 shown in Fig. 3. Anti-friction bearings,such as shown at 40, may be provided for mounting-the horie zontalspindle 38, while suitable thrust bearings 4| may be furnished fortaking the thrust of said spindle. A cover platei for thelgear housing'is indicated at 42, said cover being held in place by means of screwsthreaded ':into-.:thetapped holes M, shown in Fig. 2. A suitable lurhriantrmav be seale w thin h a h usin 35 by means ofis ta e: oil sealrings. 43 surmundin oath end :t e horizontal spind e 3 .asishoivnr in-:lig..:3

Thfi-itflli l e ifindof a: m ll n ma h a e nil-whiohlman: e Q e andarddesign a a l up rior-the mark t; riiswinserted inierth home utt r: i he.:slehm lli a ty e is indicated hea n brac e d the AS is bvi us mill n gear housing 35. ten-gnomes; a h uht dup h inw rdly e ten in end -5 o thither as sh wmn-l mheh t -.rei i Qh-of the e n the rhea-dd of th v i miling-machines e i eit e' et zontals n ii a to a tion e theisn eelstslsaand ail-and me -ear and :31; Bulley s and a belt: may @besubstituted rthesn e s i nd-i ha at iii d red 33o detach, the .;1.viqe-- rom the. s indle thes 3 it SFQGQ SSaW :enly t il ntheclampserews o emete h s ee s Z mm-th tiea ee hd e 1 z'Bheimiliheqmaehi eemay th be used as originally.- intended, or-a s ,a verticalmiller,

T111181 u nernen en o the gea housi ack t 34 ie-a erh red as tits- 53,.sa danertureshe- ,ineharal e andi h ax a a en en it the apertures zil2iiinthe main block it. The gear housing; apertures preferably aresplit, as at '55, to proy id'e for clamping -thereof-uponthe supportbars 25 and 26a Likewise, the upperporition 56 1s provided with plitapertures 5'-1..5?|, -said"='-apertures being parallel and in axialalignment-with the-corresponding apertures 24. and -fiflliin themai-nblock-and the gear :housing; resneotively: The bearingzibraeketfiiland the gear housin share clamn daiieth s port ba sand an m ansz f thesre s ikes .h wh upon BhQEd aiW lH SE ,th a bloeki t be n t ntemosed:hetrteen saidzbem ans otthe spacers 48. A F

d t e-a m ts to acetate throug thecO- Means for aligning the devicesquare with the work piece upon the table l0 may be provided. In theexemplified form, a pair of upstanding lugs 59 may be provided upon thetop face 60 of the gear housing bracket 34, adjacent the outer endsthereof, said lugs being disposed to straddle the lower portion of themilling machine neck 6! with substantial clearance therebetween. Thelugs 59 are provided with set screws 62, in threaded enga ement withsaid lugs, the screws being directed toward the neck 6! of the machine.Loosening one set screw and tightening the other, before tightening theiclag-i ping scnews ii! on the main block It, will result in achievingthe proper alignment of the ihorizonta'l spindle and arbor with the workable Tl Upon loosening the screws 2'! and 58, the bearzingi bracket 4'1,main block l5, and the gear housing may be moved along the support barsand e ui ement o s ttin p t e 1, 'enay demandhe derie o th :n esen ivent n has t e advantage of being angulary adjustable relatiue to theaxis-of the Vertical-spindle 5, therebyto dispose :the horizontalspindle 38 I and arbor fiat ny desired-angle transversely of the tableIt]. In a standardhorizontal,milling maie n ath e e and spind e a s s aways at r -h an es to the ongi udinal ax o t ill *" that-cone machinemay be-made to perform a multiplicity of operations usually ,requiringthe services of two, or more l achines resulting in a saving in cost offloor space, as WQllas in cost ,of equipment. Vlariousother advantageswill be apparentgtolpersons skilled inthe art to which theinventien a prtai s- It is to be understood,i of course, that various ,rnodifications.andschanges in structural ,details ,nraylibe made, within-..the-s.cope.ofthe appende ela ms W- thoutdepart n ite th p ito theinvention.

-Whatsis claimed is:

1. In sanuattachment for milling machines and the like-haltingai-lvertical,spindle-and-spindle nose,

;' .a mainiblock, means forscouring-the main block iii) to the spindlemose; horizontalsupport-bars carr ed by he ma n lock-in sp dparallelism, a gear housing bracket and a bearing bracket depending Ifrom, saidsuppont. bars-latioppesite. sides of the main block, a drivingsprocket in engagement w th-the e ical spi d e, aid t ven spr c keye t eve ti elsha t i umal d sai ieea housing bracket, means for driving thedriven sprocket, a" worm keyed to. said driven sprocket shaft,a-horizontal spindle journaled in the gear .s bra ket andsear h us n .vas :main block-l mea s adiustably se uring the main block to the spindlenose, horizontal support bars carried by the main block in spacedparallelism, a gear housing bracket depending from said support bars, asprocket in rotatable engagement with the vertical spindle of themilling machine, a vertical shaft journaled in the gear housing bracket,a second sprocket keyed to the vertical shaft, means connectingthe'second sprocket to the first sprocket for driving engagementtherewith, a worm keyed to the vertical shaft, a horizontal spindlejournaled in the gear housing bracket, a gear in mesh with the worm andfixedly mounted upon the horizontal spindle for rotation therewith, andmeans depending from the support bars for horizontally supporting oneend of a milling machine arbor while its opposite end is in rotatableengagement with the horizontal spindle.

3. An attachment for horizontally supporting a rotating tool holdingarbor comprising a centrally apertured main block, means for adjustablyclamping said main block to the spindle nose of a vertical millingmachine, support bars carried by the main block at substantially theircenter, a gear housing bracket depending from the support bars, arotating shaft vertically journaled in said gear housing bracket, a wormkeyed to said vertical shaft, a horizontal spindle rotatively mounted insaid gearing housing, a worm gear fixedly mounted upon said horizontalspindle for rotation therewith and in mesh with said worm, means forrotating said vertical shaft upon rotation of the vertical spindle ofthe vertical milling machine, and means depending from said support barsfor horizontally supporting one end of a tool holding arbor while itsother end is in engagement with the horizontal spindle of theattachment.

4. A device for attachment to a vertical milling machine having a head,a r'otating vertical spindle, and a spindle nose, said device comprisingin combination, a pair of brackets including horizontally alignedbearings, and means for supporting said brackets in fixed relation tosaid head, a rotary horizontal arbor journalled in said bearings, andmeans including a reduction gear for power rotating the arbor from thespindle at a speed materially less than the speed of rotation of saidspindle, said bracket supporting means being rotationally adjustablerelative to the spindle nose, and means for maintaining adjustedpositions of said bracket supporting means, including a pair of spacedarms on said supporting means loosely straddling the machine head, andopposed adjustment screws carried by said arms, and adapted to engageopposite sides of the head.

' CARL VAN AUSDALL.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,029,402 Ritter June 11, 19122,475,227 Evans July 5, 1949

